UFC 98

Lyoto Machida lands a right hand to Rashad Evans in the second round of their UFC light-heavyweight bout Saturday night at the MGM Grand Garden Arena in Las Vegas.   (Eric Jamison / Associated Press)

Rashad Evans tries to gain his senses after being knocked out by Lyoto Machida in the second round of their UFC light-heavyweight bout Saturday night.   (Eric Jamison / Associated Press)

Rashad Evans is given medical attention after being knocked out in the second round of his UFC light-heavyweight bout against Lyoto Machida on Saturday night.   (Eric Jamison / Associated Press)

Matt Serra trades blows with Matt Hughes in a welterweight bout Saturday night during UFC 98 at the MGM Grand Garden Arena in Las Vegas.   (Eric Jamison / Associated Press)

Matt Hughes raises the arm of Matt Serra Saturday night after Hughes had defeated Serra in a welterweight battle of former UFC champions.  (Eric Jamison / Associated Press)

Drew McFedries celebrates his first-round knockout of Xavier Foupa-Pokam in a UFC middleweight bout Saturday night.   (Eric Jamison / Associated Press)